GB8908544D0 - Ballast circuits for discharge lamps - Google Patents

Ballast circuits for discharge lamps

Info

Publication number
GB8908544D0
GB8908544D0 GB898908544A GB8908544A GB8908544D0 GB 8908544 D0 GB8908544 D0 GB 8908544D0 GB 898908544 A GB898908544 A GB 898908544A GB 8908544 A GB8908544 A GB 8908544A GB 8908544 D0 GB8908544 D0 GB 8908544D0
Authority
GB
United Kingdom
Prior art keywords
discharge lamps
ballast circuits
bridge rectifier
circuit
potential
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
GB898908544A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thorn EMI PLC
Original Assignee
Thorn EMI PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thorn EMI PLC filed Critical Thorn EMI PLC
Priority to GB898908544A priority Critical patent/GB8908544D0/en
Publication of GB8908544D0 publication Critical patent/GB8908544D0/en
Priority to AT90303777T priority patent/ATE112131T1/en
Priority to DE69012626T priority patent/DE69012626D1/en
Priority to EP90303777A priority patent/EP0392770B1/en
Priority to AU53223/90A priority patent/AU619970B2/en
Priority to CA002014606A priority patent/CA2014606A1/en
Priority to JP2100141A priority patent/JPH034492A/en
Priority to US07/508,733 priority patent/US5117157A/en
Priority to NZ233343A priority patent/NZ233343A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/12—Arrangements for reducing harmonics from ac input or output
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Inverter Devices (AREA)

Abstract

A ballast circuit (1) for the operation of a discharge lamp includes a bridge rectifier (5). A capacitive energy storage device (C1) and a load circuit (9) are connected in series across the bridge rectifier (5). A charge circuit (12) provides charge to the capacitive energy storage (C1) from the load circuit (9) in a potential so as to add to the potential from the output of the bridge rectifier (5).
GB898908544A 1989-04-14 1989-04-14 Ballast circuits for discharge lamps Pending GB8908544D0 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
GB898908544A GB8908544D0 (en) 1989-04-14 1989-04-14 Ballast circuits for discharge lamps
AT90303777T ATE112131T1 (en) 1989-04-14 1990-04-09 BALLAST CIRCUITS FOR DISCHARGE LAMPS.
DE69012626T DE69012626D1 (en) 1989-04-14 1990-04-09 Ballast circuits for discharge lamps.
EP90303777A EP0392770B1 (en) 1989-04-14 1990-04-09 Ballast circuits for discharge lamps
AU53223/90A AU619970B2 (en) 1989-04-14 1990-04-12 Ballast circuits for discharge lamps
CA002014606A CA2014606A1 (en) 1989-04-14 1990-04-12 Ballast circuits for discharge lamps
JP2100141A JPH034492A (en) 1989-04-14 1990-04-16 Stabilizing circuit for discharge lamp
US07/508,733 US5117157A (en) 1989-04-14 1990-04-16 Ballast circuits for discharge lamps
NZ233343A NZ233343A (en) 1989-04-14 1990-04-18 Ballast circuit for discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB898908544A GB8908544D0 (en) 1989-04-14 1989-04-14 Ballast circuits for discharge lamps

Publications (1)

Publication Number Publication Date
GB8908544D0 true GB8908544D0 (en) 1989-06-01

Family

ID=10655092

Family Applications (1)

Application Number Title Priority Date Filing Date
GB898908544A Pending GB8908544D0 (en) 1989-04-14 1989-04-14 Ballast circuits for discharge lamps

Country Status (9)

Country Link
US (1) US5117157A (en)
EP (1) EP0392770B1 (en)
JP (1) JPH034492A (en)
AT (1) ATE112131T1 (en)
AU (1) AU619970B2 (en)
CA (1) CA2014606A1 (en)
DE (1) DE69012626D1 (en)
GB (1) GB8908544D0 (en)
NZ (1) NZ233343A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1020536C (en) * 1991-09-18 1993-05-05 杜荣久 Fluorescent light functional extender apparatus
FR2696311B1 (en) * 1992-09-30 1994-12-23 Courier De Mere Henri Self-compensating disposable ballast.
CA2095793A1 (en) * 1993-05-07 1994-11-08 Raymond Berthiaume Electronici ballast for fluorescent lamp
EP0974188A1 (en) * 1998-01-30 2000-01-26 Koninklijke Philips Electronics N.V. Flyback converter with limited output power
DE102017106424B4 (en) * 2017-03-24 2021-09-02 Infineon Technologies Austria Ag Power converter circuit with a main converter and an auxiliary converter

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4004187A (en) * 1974-10-21 1977-01-18 General Electric Company Push-pull inverter ballast for arc discharge lamps
US4259614A (en) * 1979-07-20 1981-03-31 Kohler Thomas P Electronic ballast-inverter for multiple fluorescent lamps
AU555174B2 (en) * 1981-09-18 1986-09-18 Oy Helvar Electronic ballast for a discharge lamp
GB2159360B (en) * 1982-02-20 1986-04-23 Transtar Limited Power supplies
EP0205287B1 (en) * 1985-06-04 1989-12-06 Thorn Emi Lighting (Nz) Limited Improvements in or relating to switched mode power supplies
DE3623749A1 (en) * 1986-07-14 1988-01-21 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh CIRCUIT ARRANGEMENT FOR OPERATING LOW-PRESSURE DISCHARGE LAMPS
US4884180A (en) * 1987-12-08 1989-11-28 Wandel & Goltermann Gmbh & Co. Regulated direct-current converter
NL8800015A (en) * 1988-01-06 1989-08-01 Philips Nv ELECTRICAL DEVICE FOR IGNITION AND POWERING A GAS DISCHARGE LAMP.

Also Published As

Publication number Publication date
EP0392770B1 (en) 1994-09-21
NZ233343A (en) 1992-09-25
AU619970B2 (en) 1992-02-06
AU5322390A (en) 1990-10-18
ATE112131T1 (en) 1994-10-15
DE69012626D1 (en) 1994-10-27
EP0392770A2 (en) 1990-10-17
US5117157A (en) 1992-05-26
JPH034492A (en) 1991-01-10
EP0392770A3 (en) 1992-02-12
CA2014606A1 (en) 1990-10-14

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